True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Crystallization is a separation technique used to produce rock candy from a sugar
solution.
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2.
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Orange juice is a heterogeneous mixture.
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3.
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The
periodic table organizes elements into a grid of vertical columns known as periods.
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4.
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Milk
is a homogeneous mixture.
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5.
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The
magnetization of an iron rod is an example of a chemical change.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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6.
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Matter that has a uniform and unchanging composition is known as a(n)
____. a. | compound | c. | mixture | b. | element | d. | substance | | | | |
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7.
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The
law of conservation of mass states that during a chemical reaction, total mass is
____. a. | created | c. | destroyed | b. | the same | d. | utilized | | | | |
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8.
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Which
of the following substances is an element? a. | Baking soda | c. | Salt | b. | Iron | d. | Sugar | | | | |
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9.
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The
law of ____ states that a compound is always composed of the same elements in the same proportion by
mass. a. | conservation of
energy | c. | definite
proportions | b. | conservation of mass | d. | multiple proportions | | | | |
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10.
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Bromine element occurs in the ____ state at room temperature. a. | gaseous | c. | plasma | b. | liquid | d. | solid | | | | |
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